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Golf club with interchangeable head-shaft connection

a golf club and head-shaft technology, applied in the field of golf clubs, can solve the problems of adding excessive weight to the club head, and achieve the effects of quick and reliable assembly and disassembly of the shaft, optimal performance, and cost-effective customization of the golf club

Active Publication Date: 2008-02-26
TOPGOLF CALLAWAY BRANDS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an improved connection between the club head and shaft for cost-effective customization of golf clubs. This connection allows for quick and reliable assembly and disassembly of the shaft from the club head without adding excessive weight. The reduced weight of the connection enables more discretionary mass to be distributed to favorable locations in the club head to enhance its performance. The invention includes a tube, a shaft, a sleeve, and a mechanical fastener. The tube has a tapered portion, a rotation prevention portion, and an upper end inner diameter that is larger than the inner diameter at the lower end. The sleeve has a frustoconical portion and a keyed portion. When the shaft is connected to the club head, the frustoconical portion and keyed portion of the sleeve are respectively received in the tapered portion and keyway portion of the tube. The frustoconical portion of the sleeve extends at least one eighth of the length of the lower section of the tube to provide an increased surface area for contact with the tapered portion of the tube.

Problems solved by technology

First, they require that the golf club head have a conventional hosel for attachment.
Second, these connections add excessive weight to the club head, thereby minimizing the amount of discretionary mass that may be distributed in the club head to optimize mass properties.

Method used

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  • Golf club with interchangeable head-shaft connection
  • Golf club with interchangeable head-shaft connection
  • Golf club with interchangeable head-shaft connection

Examples

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Embodiment Construction

[0037]As shown in FIGS. 1 and 2, a golf club is generally designated 20. The golf club 20 has a club head 22 and a shaft 40 that is coupled to the club head 22. The club head 22 is a wood-type golf club head with a body 23 having a crown 24, a sole 26, a ribbon 28 and a striking plate 30. The striking plate 30 generally extends along the front of the club head 22 from a heel end 32 to a toe end 34. The club head body 23 preferably has a hollow interior with an internal hosel 31 (FIG. 3) for receiving the tip end of the shaft 40.

[0038]The body 23 is preferably composed of a metallic material, such as titanium, titanium alloy, stainless steel, or the like. Alternatively, the body 23 may be composed of multiple materials, such as a titanium face cup attached to a carbon composite body. The body 23 has a large volume, preferably greater than 300 cubic centimeters, and weighs no more than 215 grams, more preferably between 180 and 215 grams. Although the club head 22 illustrated is a woo...

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Abstract

A golf club (20) having a club head (22) with an interchangeable shaft (40) is disclosed herein. The golf club (20) includes a tube (44, 144) mounted in the club head (22), and a sleeve (46, 146) mounted on a tip end (50) of the shaft (40). The tube (44, 144) includes a tapered portion (60, 160) and a rotation prevention portion (62, 162). The sleeve (46, 146) has a frustoconical portion (72, 172) and a keyed portion (74, 174) that are respectively received in the tapered portion (60, 160) and the rotation prevention portion (62, 162) of the tube (44, 144). The golf club (20) further includes a mechanical fastener (48, 148) for removably securing the shaft (40) to the club head (22).

Description

CROSS REFERENCE[0001]The present invention is a continuation-in-part of pending U.S. patent application Ser. No. 11 / 461,132, filed on Jul. 31, 2006, which is a continuation-in-part of U.S. patent application Ser. No. 10 / 904,581, which was filed on Nov. 17, 2004, now U.S. Pat. No. 7,083,529.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002]Not ApplicableBACKGROUND OF THE INVENTION[0003]1. Field of the Invention[0004]The present invention relates to a golf club having an improved connection for interchanging a shaft with a golf club head.[0005]2. Description of the Related Art[0006]In order to improve their game, golfers often customize their equipment to fit their particular swing. Golf equipment manufacturers have responded by increasing the variety of clubs available to golfers. For example, a particular model of a driver-type golf club may be offered in several different loft angles and lie angles to suit a particular golfer's needs. In addition, golfers can cho...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A63B53/02
CPCA63B53/00A63B53/02A63B53/0466A63B53/007A63B53/047A63B2053/0408A63B2053/027A63B2210/50A63B2209/00A63B2209/02A63B2053/0433A63B2053/023A63B53/027A63B53/023A63B53/0408A63B53/0433A63B60/00
Inventor HOCKNELL, ALANCACKETT, MATTHEW T.HOLT, DENVEREVANS, D. CLAYTONSTEVENS, DANIEL M.WENCK, JAMES C.
Owner TOPGOLF CALLAWAY BRANDS CORP
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